US7121166B2 - Power tong assembly - Google Patents

Power tong assembly Download PDF

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Publication number
US7121166B2
US7121166B2 US10/835,610 US83561004A US7121166B2 US 7121166 B2 US7121166 B2 US 7121166B2 US 83561004 A US83561004 A US 83561004A US 7121166 B2 US7121166 B2 US 7121166B2
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United States
Prior art keywords
tong
assembly
die
center
clamping arms
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US10/835,610
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US20050241441A1 (en
Inventor
Lopek Drzewiecki
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National Oilwell Varco LP
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National Oilwell LP
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Assigned to NATIONAL-OILWELL, L.P. reassignment NATIONAL-OILWELL, L.P. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRZEWIECKI, LOPEK
Priority to US10/835,610 priority Critical patent/US7121166B2/en
Priority to CA002503230A priority patent/CA2503230A1/en
Priority to EP05252607A priority patent/EP1591618A3/en
Priority to BR0501584-7A priority patent/BRPI0501584A/pt
Priority to MXPA05004572A priority patent/MXPA05004572A/es
Priority to NO20052088A priority patent/NO20052088L/no
Publication of US20050241441A1 publication Critical patent/US20050241441A1/en
Publication of US7121166B2 publication Critical patent/US7121166B2/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
    • E21B19/163—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe piston-cylinder actuated

Definitions

  • the present invention relates generally to methods and apparatus for gripping and manipulating pipe. More particularly, the present invention relates to methods and apparatus for facilitating the connection and disconnection of sections of drill pipe.
  • Drill strings used in rotary drilling are often constructed from individual lengths of drill pipe connected in series to form a drillstring.
  • the individual lengths of drill pipe are commonly joined by threaded connections. Because of the loads incurred by the drillstring, the connections have to be pre-loaded with a certain amount of torque in order to maintain a satisfactory connection during use.
  • Pipe tongs are one tool used for facilitating the connection and disconnection, or making and breaking, of drill pipe connections.
  • Pipe tongs are generally located at the drill floor and operate by gripping a connection between two adjacent lengths of pipe and applying torque to loosen or tighten the connection.
  • Many pipe tongs operate by gripping above and below the junction between two adjacent pipe sections. The tongs then rotate the two sections of pipe relative to each other. This rotation often has a very limited rotational range but is performed with sufficient torque to properly make or break the connection.
  • the torque applied to a given connection can be on the order of tens of thousands of foot-pounds.
  • pipe tongs Because of the high torque loads applied to the pipe, pipe tongs have been known to scar the outer diameter of the pipe, especially if the pipe slips within the tong. In order to minimize this slippage, as well as to ensure the proper torque requirements are met, the interface between the pipe and the tong is critical. In some cases, pipe tongs have been known to partially collapse the pipe with an excessive clamping force. Excessive damage to the pipe is often a result of the pipe not being centered within the pipe tong causing the gripping mechanism of the tong to apply uneven force to the pipe.
  • a tong assembly comprising a body and a center member slidable relative to said body.
  • a pair of clamping arms are rotatably connected to said body.
  • the clamping arms are connected to said center member such that as said center member slides relative to said body, said clamping arms rotate relative to said body.
  • the assembly also comprises a plurality of die assemblies, wherein at least one die assembly is mounted to each clamping arm and at least one die assembly is mounted to said center slider.
  • One embodiment comprises a tong assembly comprising a body and a center member slidable relative to said body.
  • a pair of clamping arms are rotatably connected to said body.
  • the clamping arms are connected to said center member such that as said center member slides relative to said body, said clamping arms rotate relative to said body.
  • the assembly includes a plurality of die assemblies, wherein at least one die assembly is mounted to each clamping arm and at least one die assembly is mounted to said center slider.
  • a hydraulic cylinder is operable to slide said center member relative to said body.
  • the die assemblies that are mounted to the clamping arms are rotatable relative to the clamping arms and the die assembly that is mounted to the center slider is not rotatable relative to the center slider.
  • Each die assembly may comprise a die, a holder adapted to receive the die; and a retainer supporting the holder such that the holder is rotatable relative to the retainer, wherein the retainer is attached to one of the clamping arms.
  • the tong assembly may also comprises a pair of connecting links, wherein each of the connecting links is pivotally connected to the center member and one of the clamping arms by a pin connection that connects to one of the connecting links; and a pivot connection that connects to the body, wherein the clamping arm rotates about the pivot connection, wherein the distance from the pin connection to the pivot connection is equal to the distance from the pivot connection to the center of the die assembly.
  • the body is a unitary weldment having an open side and the center member and the clamping arms are installed in the body through the open side.
  • the tong assembly may comprise an upper tong, a back-up tong aligned with and below the upper tong, a slider connected between the upper tong and the back-up tong, wherein the slider establishes a center point about which the upper tong and the back-up tong can rotate.
  • a pair of first hydraulic cylinders operable to rotate the upper tong relative to the back-up tong, wherein the pair of first hydraulic cylinders have first ends connected at a single attachment to one of the tongs and second ends attached at separate points to the other of the tongs such that the tongs rotate relative to each other as one of the first cylinders retracts and the other of the first cylinders extends.
  • the present invention comprises a combination of features and advantages that enable it to overcome various problems of prior devices.
  • the various characteristics described above, as well as other features, will be readily apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments of the invention, and by referring to the accompanying drawings.
  • FIG. 1 is an elevation view of a tong assembly constructed in accordance with embodiments of the invention
  • FIG. 2 is a plan view of the tong assembly of FIG. 1 , with the upper tong removed;
  • FIG. 3 is a plan view of a tong assembly in an open position
  • FIG. 4 is a plan view of the tong assembly of FIG. 3 in a closed position
  • FIG. 5 is a plan view of the operating components of the tong assembly of FIGS. 3 and 4 ;
  • FIG. 6 is a partial plan view of one embodiment of a die assembly
  • FIG. 7 is a cross-sectional elevation view of one embodiment of a die assembly.
  • FIG. 8 is a partial sectional plan view of one embodiment of a die assembly.
  • tong assembly 100 includes top tong 102 and back-up tong 104 rotatably connected by slider 106 and torquing cylinders 108 .
  • FIG. 2 shows tong assembly 100 with top tong 102 removed. Cylinders 108 are connected to top tong 102 at pins 110 and to back-up tong 104 at pin 112 . Slider 106 allows cylinders 108 to rotate top tong 102 relative to back-up tong 104 while maintaining proper alignment between the tongs.
  • Tong assembly 100 transfers torque produced by cylinders 108 to a threaded connection between two adjacent tubular members that are engaged by clamping arms 111 .
  • Cylinders 108 may be hydraulically linked to one another such that the piston (extend) side 114 of one cylinder is coupled to the rod (retract) side 116 of the other cylinder. In this manner, hydraulic pressure can be applied simultaneously from the same source to extend one cylinder and retract the other cylinder, thus optimizing the torque applied to the threaded connection.
  • a tong 200 is shown including body 202 with its top plate 204 partially cut away to show clamping assembly 206 .
  • Body 202 is preferably formed from a unitary weldment substantially enclosed on all but one side, which is left open to accept clamping assembly 206 .
  • Clamping assembly 206 comprises center slider 208 , clamping arms 210 , connecting links 212 , slider guides 214 , and die assemblies 216 A-C.
  • Pins 218 and 220 pivotally attach connecting links 212 to center slider 208 and clamping arms 210 , respectively.
  • Pins 222 provide a pivoting connection between clamping arms 210 and body 202 .
  • Pins 222 also carry the load that is applied by the torquing cylinders from body 202 to clamping arms 210 .
  • Clamping assembly 206 is actuated by hydraulic cylinders 224 , which preferably act in unison to actuate the clamping assembly.
  • center slider 208 is moved toward tubular member 226 .
  • Center slider 208 pushes connecting links 212 and rotates clamping arms 210 about pins 222 until die assemblies 216 A and 216 B engage tubular member 226 .
  • Die assembly 216 C moves toward tubular member 226 with center slider 208 .
  • Slider guides 214 maintain alignment between center slider 208 and tubular member 226 to ensure proper operation of the tong assembly. In the preferred embodiments, all three die assemblies 216 A-C engage tubular member 226 at the same time and with equal amounts of force.
  • clamping assembly 206 operates such that, within a given size range, tubular member 228 is substantially centered, and evenly engaged by die assemblies 216 A-C. Therefore, clamping assembly 206 is arranged such that as die assembly 216 C moves toward the center of tubular member 228 , die assembles 216 A and 216 B also move toward the center of the tubular member at substantially the same rate.
  • die assemblies 216 A and 216 B may be rotatable relative to clamping arms 210 .
  • Die assembly 216 C is preferably stationary so to not allow a tubular member to move off-center.
  • a die assembly 300 is shown installed in clamping arm 210 and including die 302 and holder 304 .
  • Die 302 is preferably constructed of a hardened material formed with teeth 308 for engaging the outside surface of a tubular member.
  • Die also includes shoulders 310 configured to interface with grooves 312 in holder 304 .
  • Holder 304 has a curved rear surface 314 and curved ridge 316 on both the top and the bottom of the holder.
  • FIG. 8 a partial sectional view of die assembly 300 is shown so that the interface between ridge 316 and groove 320 can be seen.
  • Groove 320 may be slightly longer than ridge 316 in order to allow holder 304 to rotate relative to the retainer.
  • Each retainer 306 has a groove 320 for supporting rotation of holder 304 , but the grooves on the two retainers may be different.
  • Retainer 306 is preferably arranged so as to facilitate easy assembly and disassembly of die assembly 300 to support fast changing of die 302 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Automatic Assembly (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Earth Drilling (AREA)
US10/835,610 2004-04-29 2004-04-29 Power tong assembly Active 2024-11-25 US7121166B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US10/835,610 US7121166B2 (en) 2004-04-29 2004-04-29 Power tong assembly
CA002503230A CA2503230A1 (en) 2004-04-29 2005-04-18 Power tong assembly
EP05252607A EP1591618A3 (en) 2004-04-29 2005-04-27 Tong assembly and method for manipulating a tubular connection
MXPA05004572A MXPA05004572A (es) 2004-04-29 2005-04-28 Ensamblaje de tenazas mecanicas.
BR0501584-7A BRPI0501584A (pt) 2004-04-29 2005-04-28 Conjunto de tenaz, e, método para manipular uma conexão tubular
NO20052088A NO20052088L (no) 2004-04-29 2005-04-28 Krafttangenhet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/835,610 US7121166B2 (en) 2004-04-29 2004-04-29 Power tong assembly

Publications (2)

Publication Number Publication Date
US20050241441A1 US20050241441A1 (en) 2005-11-03
US7121166B2 true US7121166B2 (en) 2006-10-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/835,610 Active 2024-11-25 US7121166B2 (en) 2004-04-29 2004-04-29 Power tong assembly

Country Status (6)

Country Link
US (1) US7121166B2 (pt)
EP (1) EP1591618A3 (pt)
BR (1) BRPI0501584A (pt)
CA (1) CA2503230A1 (pt)
MX (1) MXPA05004572A (pt)
NO (1) NO20052088L (pt)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7188547B1 (en) 2005-12-23 2007-03-13 Varco I/P, Inc. Tubular connect/disconnect apparatus
US20100034620A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Telescoping jack for a gripper assembly
US20100117282A1 (en) * 2007-01-19 2010-05-13 Vermeer Manufacturing Company Vise for a directional drilling machine
WO2010085803A2 (en) * 2009-01-26 2010-07-29 T&T Engineering Services Pipe gripping apparatus
US20110030512A1 (en) * 2009-08-06 2011-02-10 Frank's Casing Crew And Rental Tools, Inc. Tubular Joining Apparatus
US7918636B1 (en) 2007-10-24 2011-04-05 T&T Engineering Services Pipe handling apparatus and method
US7980802B2 (en) 2007-10-24 2011-07-19 T&T Engineering Services Pipe handling apparatus with arm stiffening
US8011426B1 (en) 2009-01-26 2011-09-06 T&T Engineering Services, Inc. Method of gripping a tubular with a tubular gripping mechanism
US20110232895A1 (en) * 2008-12-05 2011-09-29 Tracy Earl Klotz Well tool with connectors and adapted for use with power tongs
US8128332B2 (en) 2007-10-24 2012-03-06 T & T Engineering Services, Inc. Header structure for a pipe handling apparatus
US8172497B2 (en) 2009-04-03 2012-05-08 T & T Engineering Services Raise-assist and smart energy system for a pipe handling apparatus
US8192128B2 (en) 2009-05-20 2012-06-05 T&T Engineering Services, Inc. Alignment apparatus and method for a boom of a pipe handling system
US8192129B1 (en) 2007-10-24 2012-06-05 T&T Engineering Services, Inc. Pipe handling boom pretensioning apparatus
US8235104B1 (en) * 2008-12-17 2012-08-07 T&T Engineering Services, Inc. Apparatus for pipe tong and spinner deployment
US20120284990A1 (en) * 2011-05-09 2012-11-15 Viega Gmbh & Co. Kg Jointing Clamp and Method For Producing a Compression Joint
US8371790B2 (en) 2009-03-12 2013-02-12 T&T Engineering Services, Inc. Derrickless tubular servicing system and method
US8408334B1 (en) 2008-12-11 2013-04-02 T&T Engineering Services, Inc. Stabbing apparatus and method
US8419335B1 (en) 2007-10-24 2013-04-16 T&T Engineering Services, Inc. Pipe handling apparatus with stab frame stiffening
US8469648B2 (en) 2007-10-24 2013-06-25 T&T Engineering Services Apparatus and method for pre-loading of a main rotating structural member
US8496238B1 (en) 2009-01-26 2013-07-30 T&T Engineering Services, Inc. Tubular gripping apparatus with locking mechanism
US8550174B1 (en) 2008-12-22 2013-10-08 T&T Engineering Services, Inc. Stabbing apparatus for centering tubulars and casings for connection at a wellhead
US20140238111A1 (en) * 2011-07-01 2014-08-28 Nakata Manufacturing Co., Ltd. Tube clamping device and hydraulic pressure tester technical field
US8876452B2 (en) 2009-04-03 2014-11-04 T&T Engineering Services, Inc. Raise-assist and smart energy system for a pipe handling apparatus
US9091128B1 (en) 2011-11-18 2015-07-28 T&T Engineering Services, Inc. Drill floor mountable automated pipe racking system
US9175527B2 (en) 2010-03-24 2015-11-03 2M-Tek, Inc. Apparatus for handling tubulars
US9476267B2 (en) 2013-03-15 2016-10-25 T&T Engineering Services, Inc. System and method for raising and lowering a drill floor mountable automated pipe racking system
US9500049B1 (en) 2008-12-11 2016-11-22 Schlumberger Technology Corporation Grip and vertical stab apparatus and method
US9556689B2 (en) 2009-05-20 2017-01-31 Schlumberger Technology Corporation Alignment apparatus and method for a boom of a pipe handling system
US9598918B2 (en) 2010-03-24 2017-03-21 2M-Tek, Inc. Tubular handling system
US20210363838A1 (en) * 2020-05-20 2021-11-25 Nabors Drilling Technologies Usa, Inc. Torque wrench

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO324833B1 (no) * 2005-06-24 2007-12-17 Hd Oil Technology As Gripeanordning.
CN103711446B (zh) * 2014-01-15 2016-01-20 恒天九五重工有限公司 一种钻杆拧卸机构
US10100590B2 (en) 2016-09-13 2018-10-16 Frank's International, Llc Remote fluid grip tong
WO2023287667A2 (en) * 2021-07-12 2023-01-19 Tubular Running & Rental Services, Llc Methods and apparatus for engaging tubulars

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US2453369A (en) 1945-05-15 1948-11-09 Donovan B Grable Pipe tongs
US4082017A (en) * 1975-01-07 1978-04-04 Eckel Manufacturing Co. Power operated drill pipe tongs
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US6138529A (en) 1997-02-07 2000-10-31 Weatherford/Lamb, Inc. Apparatus for gripping a tubular member
US6263763B1 (en) * 1999-04-21 2001-07-24 Universe Machine Corporation Power tong and backup tong system
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US4574664A (en) * 1984-07-23 1986-03-11 Eckel Manufacturing Co., Inc. Powered back-up tongs
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US6116118A (en) 1998-07-15 2000-09-12 Wesch, Jr.; William E. Gripping apparatus for power tongs and backup tools
US6263763B1 (en) * 1999-04-21 2001-07-24 Universe Machine Corporation Power tong and backup tong system
WO2007074899A1 (ja) 2005-12-28 2007-07-05 Nidaiki Co., Ltd. 農産物保護用被覆材、この被覆材の製造方法、この被覆材を使用する農産物保護用袋及び農産物保護用覆い

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Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070193417A1 (en) * 2005-12-23 2007-08-23 West Neil E Tubular-drill bit connect/disconnect apparatus
US7313986B2 (en) 2005-12-23 2008-01-01 Varco I/P, Inc. Tubular-drill bit connect/disconnect apparatus
US7188547B1 (en) 2005-12-23 2007-03-13 Varco I/P, Inc. Tubular connect/disconnect apparatus
US20100117282A1 (en) * 2007-01-19 2010-05-13 Vermeer Manufacturing Company Vise for a directional drilling machine
US8419335B1 (en) 2007-10-24 2013-04-16 T&T Engineering Services, Inc. Pipe handling apparatus with stab frame stiffening
US8393844B2 (en) 2007-10-24 2013-03-12 T&T Engineering Services, Inc. Header structure for a pipe handling apparatus
US8469648B2 (en) 2007-10-24 2013-06-25 T&T Engineering Services Apparatus and method for pre-loading of a main rotating structural member
US9194193B1 (en) 2007-10-24 2015-11-24 T&T Engineering Services, Inc. Pipe handling apparatus and method
US8696288B2 (en) 2007-10-24 2014-04-15 T&T Engineering Services, Inc. Pipe handling boom pretensioning apparatus
US7918636B1 (en) 2007-10-24 2011-04-05 T&T Engineering Services Pipe handling apparatus and method
US7946795B2 (en) 2007-10-24 2011-05-24 T & T Engineering Services, Inc. Telescoping jack for a gripper assembly
US7980802B2 (en) 2007-10-24 2011-07-19 T&T Engineering Services Pipe handling apparatus with arm stiffening
US20100034620A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Telescoping jack for a gripper assembly
US8192129B1 (en) 2007-10-24 2012-06-05 T&T Engineering Services, Inc. Pipe handling boom pretensioning apparatus
US8128332B2 (en) 2007-10-24 2012-03-06 T & T Engineering Services, Inc. Header structure for a pipe handling apparatus
US9562404B2 (en) 2008-12-05 2017-02-07 Titus Tools, Inc. Well tubing hanger adapted for use with power tongs and method of using same
US20110232895A1 (en) * 2008-12-05 2011-09-29 Tracy Earl Klotz Well tool with connectors and adapted for use with power tongs
US9500049B1 (en) 2008-12-11 2016-11-22 Schlumberger Technology Corporation Grip and vertical stab apparatus and method
US8408334B1 (en) 2008-12-11 2013-04-02 T&T Engineering Services, Inc. Stabbing apparatus and method
US8235104B1 (en) * 2008-12-17 2012-08-07 T&T Engineering Services, Inc. Apparatus for pipe tong and spinner deployment
US8550174B1 (en) 2008-12-22 2013-10-08 T&T Engineering Services, Inc. Stabbing apparatus for centering tubulars and casings for connection at a wellhead
US8011426B1 (en) 2009-01-26 2011-09-06 T&T Engineering Services, Inc. Method of gripping a tubular with a tubular gripping mechanism
WO2010085803A3 (en) * 2009-01-26 2010-11-18 T&T Engineering Services Pipe gripping apparatus
WO2010085803A2 (en) * 2009-01-26 2010-07-29 T&T Engineering Services Pipe gripping apparatus
US20100187740A1 (en) * 2009-01-26 2010-07-29 T&T Engineering Services Pipe gripping apparatus
US8474806B2 (en) * 2009-01-26 2013-07-02 T&T Engineering Services, Inc. Pipe gripping apparatus
US8496238B1 (en) 2009-01-26 2013-07-30 T&T Engineering Services, Inc. Tubular gripping apparatus with locking mechanism
US8646522B1 (en) 2009-01-26 2014-02-11 T&T Engineering Services, Inc. Method of gripping a tubular with a tubular gripping mechanism
US8371790B2 (en) 2009-03-12 2013-02-12 T&T Engineering Services, Inc. Derrickless tubular servicing system and method
US8172497B2 (en) 2009-04-03 2012-05-08 T & T Engineering Services Raise-assist and smart energy system for a pipe handling apparatus
US9556688B2 (en) 2009-04-03 2017-01-31 Schlumberger Technology Corporation Raise-assist and smart energy system for a pipe handling apparatus
US8876452B2 (en) 2009-04-03 2014-11-04 T&T Engineering Services, Inc. Raise-assist and smart energy system for a pipe handling apparatus
US9556689B2 (en) 2009-05-20 2017-01-31 Schlumberger Technology Corporation Alignment apparatus and method for a boom of a pipe handling system
US8905699B2 (en) 2009-05-20 2014-12-09 T&T Engineering Services, Inc. Alignment apparatus and method for a boom of a pipe handling system
US8192128B2 (en) 2009-05-20 2012-06-05 T&T Engineering Services, Inc. Alignment apparatus and method for a boom of a pipe handling system
US8601910B2 (en) 2009-08-06 2013-12-10 Frank's Casing Crew And Rental Tools, Inc. Tubular joining apparatus
US20110030512A1 (en) * 2009-08-06 2011-02-10 Frank's Casing Crew And Rental Tools, Inc. Tubular Joining Apparatus
US9175527B2 (en) 2010-03-24 2015-11-03 2M-Tek, Inc. Apparatus for handling tubulars
US9598918B2 (en) 2010-03-24 2017-03-21 2M-Tek, Inc. Tubular handling system
US20120284990A1 (en) * 2011-05-09 2012-11-15 Viega Gmbh & Co. Kg Jointing Clamp and Method For Producing a Compression Joint
US10179398B2 (en) * 2011-05-09 2019-01-15 Viega Technology Gmbh & Co. Kg Jointing clamp and method for producing a compression joint
US8997324B2 (en) * 2011-07-01 2015-04-07 Nakata Manufacturing Co., Ltd. Tube clamping device and hydraulic pressure tester technical field
US20140238111A1 (en) * 2011-07-01 2014-08-28 Nakata Manufacturing Co., Ltd. Tube clamping device and hydraulic pressure tester technical field
US9091128B1 (en) 2011-11-18 2015-07-28 T&T Engineering Services, Inc. Drill floor mountable automated pipe racking system
US9945193B1 (en) 2011-11-18 2018-04-17 Schlumberger Technology Corporation Drill floor mountable automated pipe racking system
US9476267B2 (en) 2013-03-15 2016-10-25 T&T Engineering Services, Inc. System and method for raising and lowering a drill floor mountable automated pipe racking system
US20210363838A1 (en) * 2020-05-20 2021-11-25 Nabors Drilling Technologies Usa, Inc. Torque wrench
US11993988B2 (en) * 2020-05-20 2024-05-28 Nabors Drilling Technologies Usa, Inc. Torque wrench

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NO20052088L (no) 2005-10-31
EP1591618A3 (en) 2005-12-28
CA2503230A1 (en) 2005-10-29
EP1591618A2 (en) 2005-11-02
BRPI0501584A (pt) 2006-01-10
MXPA05004572A (es) 2006-05-17
NO20052088D0 (no) 2005-04-28
US20050241441A1 (en) 2005-11-03

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